4398766646 has 16 divisors (see below), whose sum is σ = 6947804160. Its totient is φ = 2082911400.

The previous prime is 4398766639. The next prime is 4398766709. The reversal of 4398766646 is 6466678934.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102071 + ... + 138621.

It is an arithmetic number, because the mean of its divisors is an integer number (434237760).

Almost surely, 2^4398766646 is an apocalyptic number.

4398766646 is a deficient number, since it is larger than the sum of its proper divisors (2549037514).

4398766646 is a wasteful number, since it uses less digits than its factorization.

4398766646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39739.

The product of its digits is 31352832, while the sum is 59.

The square root of 4398766646 is about 66323.1983999566. The cubic root of 4398766646 is about 1638.4894188378.

The spelling of 4398766646 in words is "four billion, three hundred ninety-eight million, seven hundred sixty-six thousand, six hundred forty-six".